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Finding the Fourth Proportional to 1,964,672.40, 2,711,028.24 and 1,105,214.88

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Solution

The fourth proportional to 1,964,672.40, 2,711,028.24 and 1,105,214.88 is: 1,525,072.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964,672.40 : 2,711,028.24 = 1,105,214.88 : x
  2. Step 2: Convert to fraction form
    1,964,672.40/2,711,028.24 = 1,105,214.88/x
  3. Step 3: Cross multiply
    1,964,672.40x = 2,711,028.24 × 1,105,214.88
  4. Step 4: Simplify right side
    1,964,672.40x = 2,996,268,750,948.21
  5. Step 5: Solve for x
    x = 2,996,268,750,948.21/1,964,672.40
  6. Step 6: Final answer
    x = 1,525,072.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.